Dispensing attacement for collapsible tubes



May 16, 1939. c, s MANN 2,158,333 DIsPENsING A'gTAcHMENT FOR COLLAPSIBLE TUBES Filed Sept, .13, 1937 C/mmfs Srfwaer Mau/v.

A TTOR/VE Y.

Patented May 16, 1939 UNITED sTATlis PATENT OFFICE DISPENSING ATTACHMENT FOR COLLAPS- IBLE TUBES Charles Stewart Mann, Vancouver, British Columbia, Canada Application September 13, 1937, Serial No. 163,566

6 Claims. (Cl. 221-60) My invention relates to improvements in disand its cap are held against endwise movement pensing attachments for collapsible tubes which by a grub screw l entering into and engaging are particularly adapted for use in dispensing the annular groove lll. The cap is provided with cosmetics, face cream and the like, where the a discharge oriiice i8 which is adapted to be paste or cream expressed from the tube is to be closed by the endwise movable plunger I4 fitted 5 wiped onC with the ringer tip. Also to provide a in the inner sleeve Il. structure oi such shape which can be left per- The plunger i4 is provided at its base with a fectly clean and sanitary without effort by the stem 2t surrounded by a compression spring 2l, simple expedient of severing the ribbon of paste which latter abuts the bottom wall of a spring 10 from the tube. Further objects are to provide well 22 fitted into the base of the inner sleeve II. 10 a spring structure for closing the attachment A bOlt 23 is retraetably Carried by the plunger which will afford a relatively long closing move- |44, Whioll is adapted t0 engage a spiral SlOt 24 ment in an attachment which is desirably short OrIned in the inner peripheral Wall O the Cap I6. in design. This spiral slot extends one complete turn and rlhe invention contemplates a structure requirterminates in an upper Slot terminal 25 and a l5 ing a complete turn of the cap to open and a lower slot terminal 26, which are aligned with novel method of securing the attachment to the eaeh Other parallel t0 the Vertical axis of the nipple of a collapsible tube which will be fully tube- The upper Slet terminal 25 is bevelled on described and Shown in the accompanying drawits under side to facilitate the entry of the bolt 23.

ing, in which; The bolt 23 is slidably mounted in a socket 21, 20

Fig 1 is a, Vertical Sectiontu View 0f the insee Figure 2, which socket is screwed into the Vention plunger lil. An axial recess 28 is formed in Fig. 2 is a sectional view of the plunger showthe Sooket 2l and a Complementary recess 29 ing the preferred type of bolt springis formed in the bolt 23 and in these two recesses 25 In the drawing like characters of reference 2t Compression Spring 30 is housed Whioh Urges 25 indicate corresponding parts in each figure. the bolt radially outwards through the vertical The numeral l indicates a collapsible tube of Slot l3- the usual type having shoulders 2 and a nipple 3 A thumb button 3l having a stem 32 is slidably through which the contents of the tube are nor mounted in the Cap i5 and is urged in an 011tmally expressed. Fitted upon the nipple is an Ward direotion by a Spring 33. The Stem 32 iS-30 internally threaded sleeve 4 having a conical Surrounded by a paoling ringr 32A Which is comlange 5 which is provided on its under face with pressed in the usual Wat7 by a gland Collar 32B. an annular recess 6 for the purpose of bridging The inner end of the stem enters the lower slot over any lettering which may be embossed upon terminal 26 and has suiiicient sliding movement the shoulders of the tube and to permit Said to thrust the bolt 23 clear of said terminal. 35 flange to contact intimately the shoulders of the The threaded sleeve l is non-rotatably Secured tubeto the nipple 3 by a pointed pin 34 having a A flange 'l extends inwardly of the threaded head 35 under Which a spring 35 iS placed t0 sleeve 4 which bears down upon a packing urge the pin outwardly.

D washer 8. The sleeve 4 is provided with an ex- A threaded Opening 3l is formed in the collar 40 ternal packing ring 9 and an annular groove I0, l5 Whioh iS adapted to he brought into register the purpose of which will hereinafter appear. With the pin 34, and a sCreW plug 38 iS fitted Mounted upon the threaded sleeve 4 is an inner into Said Opening, Whioh is of suCh length that Sleeve l which is supported upon the sleeve 4 its inner face coincides with that of the inner by radial arms l2 Secured in position by any face of the collar, so that the cap may be turned 45 suitable means. The inner sleeve Il is provided about the threaded Sleeve Without aieetins the with a vertical slot i3 in its side wall which non- Position of the pin 34- rotatably guides a plunger i4 sldably mounted When Cream has been dispensed through the therein orice I8 pressure applied to the press butto-n 5G Retatably mounted upon the threaded sleeve 4 3| will release the bolt 23 from the spiral slot 24 50 is a collar l5 surmounted by a cap I6, which leaving it engaged only in the Vertical Slot I3 of cap is substantially ovaliform in cross section the inner sleeve il; the spring 2l then urges the to facilitate thorough cleansing after use by the plunger upwardly to Close the diseharge Orifice simple expedient of wiping off the cream extruded and permit the bolt 23 to enter the upper slot t5 from the tube with the linger tip. The collar l5 terminal 25 of the slot 24. To open the discharge 55 Cil orifice again, it suces to rotate the cap I6, causing the bolt 23 to be urged downwardly along the spiral slot 24 and the vertical slot I3 and bring the plunger downwardly to the position shown, when the bolt 23 will again be aligned -with the stem 32 of the press button 3l.

It will be obvious that the extrusion of paste will be automatically shut off, the orifice closed and hermetically sealed in response to the application of pressure to the thumb button.

What I claim as my invention is:

1. In a dispensing attachment having an internally threaded sleeve adapted for attachment to the nipple of a collapsible tube, a cap having a collar rotatable about the sleeve, said sleeve having an opening through its wall, a pin in said opening adapted to project into the nipple of the tube, said collar having a threaded opening and a screw plug therefor adapted to be brought into register with the opening in the sleeve, said screw plug when seated in its threaded opening being adapted to press the pin into the nipple and to project to the inner peripheral face of the collar to permit the cap to rotate freely about the sleeve while retaining the pin projected into the nipple of the tube.

2. In a dispensing attachment having an internally threaded sleeve adapted for attachment to the nipple of a collapsible tube, a cap having a collar rotatable about the sleeve, said sleeve having an opening through its wall, a pin in said opening adapted to project into the nipple of the tube, said collar having a threaded opening and a screw plug therefor adapted to be brought into register with the opening in the sleeve, said screw plug when seated in its threaded opening being adapted to press the pin into the nipple and to project to the inner peripheral face of the cylindrical portion to permit the cap to rotate freely about the sleeve, said pin having an enlargement at its inner end and a. spring to urge it outwardly from its position of engagement with the nipple.

3. A dispensing attachment for collapsible tubes comprising a sleeve adapted for attachment to the nipple of said tube, a cap rotatable about the sleeve, said cap having a discharge orifice adjacent its upper end, a press button upon its outer periphery and a spiral slot formed in its inner periphery, an inner sleeve carried by the rst mentioned sleeve, said inner sleeve having a vertical slot, a plunger slidable within the inner sleeve adapted to close the discharge opening, a bolt projectable from the plunger through the vertical slot and into the spiral slot, said press button being aligned in the cap to disengage the bolt from the spiral slot when said bolt is at the lower terminal portion of said spiral slot, and means for moving the plunger to close the discharge orifice.

4. A dispensing attachment for collapsible tubes comprising a sleeve, a cap rotatable about thesleeve having a spiral groove upon its inner periphery and a discharge orifice, a non-rotating plunger for closing the orifice, a spring projected 'bolt carried by the plunger normally engaging the spiral groove of the cap, means accessible through the wall of the cap for thrusting the bolt out of the spiral groove, and spring means for moving the plunger to close the orifice.

5. A dispensing attachment for collapsible tubes comprising a sleeve, a cap rotatable about the sleeve having a spiral groove upon its inner periphery and a discharge orice, a non-rotating plunger for closing the orifice, a spring projected bolt carried by the plunger normally engaging the spiral groove of lthe cap, means accessible through the Wall of the cap for thrusting the bolt out of the spiral groove, and spring means for moving the plunger to close the orice, said cap having an ovaliform cross section with its major axis extending through the longitudinal axis of the plunger.

6. A dispensing attachment for collapsible tubes comprising a sleeve, a cap rotatable about the sleeve having a spiral groove upon its inner periphery and a discharge orice, a plunger for closing the orice, a non-rotating sleeve surrounding the plunger, said sleeve having a vertical slot, a spring projected bolt carried by the plunger extending through the vertical slot and normally engaging the spiral groove of the cap, means accessible through the wall of the cap for thrusting the plunger out of the spiral groove, and spring means for moving the plunger to close the orice.

CHARLES STEWART MANN. 

